View Compilation Error

0_0_32490649_31338.cpp: In function 'int main()':
0_0_32490649_31338.cpp:20:9: error: 'll' was not declared in this scope
         ll res = solve(n) % mod;
         ^
0_0_32490649_31338.cpp:21:17: error: 'res' was not declared in this scope
         cout << res << endl;
                 ^